375 Patterson Dr, Monrovia, CA 91016 Property Records

Los Angeles County property record for 375 Patterson Dr, Monrovia, CA 91016

Property Summary

Property Type	Single Family Home
Details	3 bd · 3 ba · 1,635 sqft · built 1935
Lot Size	0.339 acres (14,776 sqft)
Owner	2 Individual Names on Record
Last Sale	$1,225,000 (Oct 2023)
Tax Bill	$16,704 (2025)
Deeds & Mortgages	Jan 2026 Mortgage Oct 2023 Transfer + 3 more
Flood Zone	Zone X (minimal risk)
APN	`8520-020-027`

Property Details

APN / Parcel Number

Primary APN	`8520-020-027`

Interior

Bedrooms	3 Beds
Full Baths	3 Baths
Total Rooms	8 Rooms
Stories	1 Story
Building Area	1,635 sqft Living Area
Fireplaces	1 Fireplace
Fireplace	Fireplace

Exterior

Year Built	Built 1935
Effective Year Built	Effective 1938
Architectural Style	Spanish
Exterior Material	Stucco
Construction Type	Wood
Roof Type	Gable
Roof Material	Tile
Lot Area	14,776 sqft (0.339 acres)
Lot Dimensions	135 ft deep x 110 ft wide

Utilities, Heating & Cooling

Cooling System	Central
Heating System	Central

Location & Zoning

Street Address	375 PATTERSON DR
City	MONROVIA
State	CA
Zip	91016-1651
Property Category	Residential
Property Type	Residential > Single Family > Home
Local Zoning Code	MORL*
Legal Description	TRACT # 10270 LOTS 5 AND LOT 6
Legal Subdivision	10270
Legal Tract	10270
Legal Block	1
Legal Lot Number	5,6
Jurisdiction	LOS ANGELES CA
Township / Civil Division	UPPER SAN GABRIEL VALLEY
Census Block Group	1
Census Block	1008
Census Tract	430301

Owner

Source: Los Angeles County records, as of May 21, 2026

Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.

Owner of Record	2 Individual Names on Record
Mailing Address	27040 VAN DYKE, MENIFEE, CA 95786
Owner Type	Individual

Deeds, Mortgages & Sale History

Date	Document
Jan 6, 2026	Deed of Trust, Mortgage · Conventional Mortgage CALTECH EMPLOYEES FCU
Oct 6, 2023	Affidavit of Death of Trustee, Transfer LAWYERS TITLE
Oct 6, 2023	Grant Deed, Transfer · Conventional Mortgage NMSI INC
Jan 27, 2023	Transfer on Death Deed, Transfer
Sep 15, 2022	Transfer on Death Deed, Transfer

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Sale	Oct 6, 2023 · Amount on Record
Deed Sale	Oct 6, 2023 · Amount on Record
Deed Document Number	2023681637
Prior Transfer Date	Sep 26, 2023
Prior Transfer Doc	0000681636
Record Updated	Sep 20, 2026

January 2026: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	LOS ANGELES CA
Property Address	375 PATTERSON DR, MONROVIA, CA 91016-1651
Transaction Type	Mortgage
Record Updated	Jan 15, 2026
Title Company	CHICAGO TITLE COMPANY

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	375 PATTERSON DR, MONROVIA, CA 91016-1651

Mortgage

Document Number	0000011781
Date	Jan 6, 2026
Instrument	26-0011781

Lender

Name	CALTECH EMPLOYEES FCU
Type	Credit Union
Address	LA CANADA FLINTRIDGE, CA 91011

Agreement

Type	Conventional Mortgage
Amount	Amount Recorded
Term	360 Months
Due	Jan 1, 2056

Interest

Rate Type	Adjustable Rate
Rate	5.25%
Type Change Date	Jan 1, 2031
Change Frequency	5 Years
Min Rate At Change	3.25%
Max Rate At Change	7.25%
Index	5-Year TN
Margin	2
Max Rate	10.2%

October 2023: Affidavit of Death of Trustee, Transfer

Document Type	Affidavit of Death of Trustee
Jurisdiction	LOS ANGELES CA
Recording Date	Oct 6, 2023
Property Address	375 PATTERSON DR, MONROVIA, CA 91016-1651
Document Number	0000681636
Map Reference	MB 145 PG 69
Instrument Date	Sep 26, 2023
Instrument	23-0681636
Transaction Type	Transfer
Record Updated	Oct 19, 2023
Title Company	LAWYERS TITLE

Transaction

Tax	$0.00
Amount Accuracy	Transfer Tax Exempt
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	27040 ESTATE DR, MENIFEE, CA 92586-2962

October 2023: Grant Deed, Transfer

Document Type	Grant Deed
Jurisdiction	LOS ANGELES CA
Recording Date	Oct 6, 2023
Property Address	375 PATTERSON DR, MONROVIA, CA 91016-1651
Document Number	0000681637
Map Reference	MB 145 PG 69
Instrument Date	Sep 11, 2023
Instrument	23-0681637
Transaction Type	Transfer
Record Updated	Oct 19, 2023
Title Company	LAWYERS TITLE COMPANY/CA, LAWYERS TITLE COMPANY

Transaction

Amount	Amount Recorded
Downpayment	Downpayment on Record
Loan-to-Value (LTV)	LTV on Record
Tax	$0.00
Amount Accuracy	Rounded by County
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Community Property
Address	375 PATTERSON DR, MONROVIA, CA 91016-1651

Mortgage

Document Number	0000681638
Date	Oct 6, 2023
Instrument	23-0681638

Lender

Name	NMSI INC
Type	Mortgage Company

Agreement

Type	Conventional Mortgage
Amount	Amount Recorded
Term	361 Months
Due	Nov 1, 2053

January 2023: Transfer on Death Deed, Transfer

Document Type	Transfer on Death Deed
Jurisdiction	LOS ANGELES CA
Recording Date	Jan 27, 2023
Property Address	375 PATTERSON DR, MONROVIA, CA 91016-1651
Document Number	0000055396
Map Reference	MB 145 PG 69
Instrument Date	Jan 11, 2023
Instrument	23-0055396
Transaction Type	Transfer
Record Updated	Feb 13, 2023

Transaction

Tax	$0.00
Amount Accuracy	Transfer Tax Exempt
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name

September 2022: Transfer on Death Deed, Transfer

Document Type	Transfer on Death Deed
Jurisdiction	LOS ANGELES CA
Recording Date	Sep 15, 2022
Property Address	375 PATTERSON DR, MONROVIA, CA 91016-1651
Document Number	0000905452
Map Reference	MB 145 PG 69
Instrument Date	Sep 6, 2022
Instrument	22-0905452
Transaction Type	Transfer
Record Updated	Oct 3, 2022

Transaction

Tax	$0.00
Amount Accuracy	Transfer Tax Exempt
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name
Address	13519 WILLOW LN, 13519, MACDOEL, CA 96058-9729

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Tenants in Common

Tax Assessment & Valuation

Source: Los Angeles County assessment roll, as of May 21, 2026

Property Jurisdictions

Type	Name
State	California
County	Los Angeles County
Municipality	Monrovia City
Unified School District	Monrovia Unified School District (KG - 12)

Tax Bill & Assessment History

Year	Tax Bill	Assessed Value
2025	$16,704.00 (+346.39%)	$1,249,500 (+398.6%) Land $999,600 Building $249,900
2023	$3,742.00 (+2.86%) Homeowner's exemption	$250,602 Land $100,317 Building $150,285
2022	$3,638.00

Assessed value and assessed market value are set for property tax purposes, not market price estimates; both are a fraction of this property's market value.

Flood

Source: FEMA National Flood Hazard Layer, effective September 30, 2026 · OpenFEMA NFIP redacted claims and policies, as of September 2026

FEMA Flood Zone	Zone X minimal risk
Flood Insurance Requirement	Not required lenders may require it
Nearby Flood Policies	2 in force
Nearby Flood Claims	2 (1980–1992)
Most Recent Claim	Feb 1992 · Rain/snow/wind Storms, Flooding, Mudslides

Values are read at the parcel center point; flood claims are located to the census block group, not this parcel; lenders make the official flood determination.

Wildfire

Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024

Wildfire Risk	Moderate above 47% of the US · lower than 72% of California
Wildfire Likelihood	0.08% annual chance
Exposure	Indirect within ember reach

Values cover an area roughly 900 ft across, not the parcel itself; insurers use their own ratings.

Drinking Water

Source: EPA Safe Drinking Water Information System, as of September 2026

Water System	MONROVIA-CITY, WATER DEPT. serves 37,931 people · EPA ID CA1910090
Water Source	Groundwater
Last State Inspection	Sep 2024
Lead	Under 1 ppb (2022–2024) action level 15 ppb

Violations Reported to EPA

Water Quality	None last 10 years
Treatment and Procedure	None last 10 years
Monitoring and Reporting	None last 3 years

Results are for the whole water system, not water tested at this address; lead at the tap also depends on the building's own pipes.

Internet Providers

Source: FCC Broadband Data Collection, based on 578 locations within half a mile, as of December 31, 2025

Provider	Max Down / Up (Mbps)
Frontier Fiber	5,000 / 5,000
Spectrum Cable	1,000 / 1,000
Giggle Fiber Cable	1,000 / 40
Verizon Fixed Wireless	300 / 20

May also be available: T-Mobile.

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